Fun little game. I also inadvertently pushed the mage off screen without meaning to and got myself stuck. But it's really cool what you accomplished as a beginner. I just started learning Unity too, so I can appreciate the challenge.
Thx for the comment. I added level boundaries to the game and tried to upload the fixed version but saw that you can't do that until the voting ends. Now the browser version of the game is gone, i wish i knew that earlier ☹️